Agreed to bright also one more thing. Feel free to add some minor own additions to the maps. The rooms wont have to be identical in form and shape just take Black Mesa Source as example they did a wonderful job. They added things but you still recognized the areas.

The bright glow is a post effect on the screenshot. It's a bit less intense in the actual game. As for the additions: I've also added a lot of extra geometry (just like BM:S) but I like to keep some areas the same for sake of recognition (just like BM:S).

Unlike HL1, dead bodies in Source are ragdolls which become active as soon as the map loads. That sometimes causes them to throw their limbs in weird positions when they collide with the floor. Unless you made custom death animations you don't have full control over the way the body looks.

Or maybe this guy just had a really awkward death.. we'll never know ;)

Yes, I can position him in a few different ways, so I can estimate his death pose a little better. Originally I wanted him to lay on his side but that just gives the ragdoll too much freedom to change pose. I'll go for flat on the back in the final version.

In that regard you could use Garrys mod for example. The original purpose of that mod was it to support the mapper with unique possibilities. In there you can place the npcs in anyway you like save em and import em just like that in your mod.